Island



UNITED STATES i PATENT Orricn.

JOlrIN L. P. SPOONER, OF PROVIDENCE, RHODE ISLAND.

MOLD.

SPECIFICATION forming part of Letters Patent No. 443,338, dated December 23, 1890.

l Application filed February 25, 1890. Serial No. 341,741. (No model.)

To all whom. it may concern.-

Be it known that I, JOHN L. P. SPOONER, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Molds, of which the following is a full, clear, and exact description. s n

This invention relates to improvements 1n the construction of molds, for which Letters Patent of the United States were issued to me, dated January 7, 1890, No. 418,767, which mold is used more particularly for making compound metal ingotsyand the invention consists of a mold for making compound metal ingots or for other purposes, constructed all substantially as hereinafter fully described, reference being had to the accompanying sheet of drawings, in which-e Figure l represents in central vertical section a mold constructed according to this invention. Fig. 2 is a longitudinal central section of the mold, showing the manner of making the same; Figs. 3 and 4, cross-sections on lines 3 3 and 4 4, Fig. 2, respectively', Figs. 5 and 6, cross-sections on lines 5 5 and 6 6,.respectively, of Fig. l; Fig. 7 1s a cros s-section on line 5 5,Fig. l, but showing a inodiiication.

In the drawings, A represents the mold, made principally of a tire-resistingl material B, which material in the present invention consists, preferably, of 'plumbagd clay, and sand, and in or about the following proportions: pluniba-go, seven (7) parts; clay, three (3) parts, and sand one (l) part, all being mixed thoroughly together with water sufficient for them to properly iniX, and when thoroughly mixed and in a moist and plastic condition the material is molded into the proper shape, as hereinafter described.

C is a cast-iron cylinder or tube open at the top, having a bottom a, with a central hole b in the same. D is a sleeve, also of cast-iron, which freely fits in the tube C and has a shoulder d to rest upon the upper end ot' the tube. rlhe hole b in the bottom of the tube C is ot the same diameter as the internal diameter of the sleeve. Sci'ewing into the lower end of the tube O are four rods or wires F., equidistant apart and extending down .there from, their other ends being screwed into a ring F of cast-iron, all as shown in Figs. l and 2, the lower end of the cast-iron tube C, the wires E, and ring F being embedded in the fire-resisting material B.

The manner oi' making this mold is as follows, which is illustrated in Fig. 2: In this figure G is a cast-iron shell or casing made, preferably, in two longitudinal parts or halves H and J and adapted to iit together at their contiguous edges e by a longitudinal tongue f in the part H, fitting in a longitudinal groove g in part J, as shown iu section in Fig. 4, and each part has onits outside alongitudinal ilat rib K, so that clamps or other device can fit thereon by which to secure the two parts rmly together.

The shell or casing G has a central longii the shoulder CZ of the sleeve fitting in the same, as shown in Fig. 2. The upper part of the shell above the tube is larger in diameter internally, as shown, for the purpose hereinai'ter described.

In preparing the moldthe tube G is rst made of the requisite length and diameter for the placing of the sleeve D therein, and the rods E are then screwed into the bottom o, and into the ring F, either by right and left hand screw-threads on their ends or` screwed in or secured in position in any suitable inanner. A rod L of the proper length and ot' a diameter to fit the opening n in the sleeve and opening I) in the bottom of the tube is then placed in and pushed up through the sleeve and opening in the tube between the rods E and the whole placed in the casing, which is properly secured together by clamps or other device, the upper end CZ of the tube C resting on the shoulder 'nz of the easing, and then the casing is placed by its bottom end on a base M, having a socket N, in which the rod L fits and rests, the rod being of a length to extend up between the wires E nearly to the ring F, according to the depth of the mold required, as shown in Fig. 2. The lire-resisting material is then properly mixed with water, described, and in a plastic and somewhat moist condition the casing is filled with it by putting it therein through the opening fr in the top of the easing and through the IOO liz

opening of the ring F, when a block P is placed on the top of the casing having a ver tical Central opening .2 through it, preferably of the same diameteras theinternal diameter of the ring F, and a rod or plunger R placed therein and pressed firmly down upon the plastic fire-resisting material, so that it will be pressed firmly round and about the wires E and central rod L, as shown in Fig. 2, and it is then left to set and dry, and when dry the block P is removed and the rod L Withdrawn, which leaves a central longitudinal opening in the mold of the required diameter for the purposes required, the easing being then taken apart, when the mold is ready for use. The larger internal diameter of the casing at its upper part is for the purpose of sccuring the necessary thickness of the iire-re sisting material for the mold.

The rods E are 'for the purpose of supporting the east-iron tube C. rlhey can be secured to the metal tube C and ring F at the bottom by riveting them thereto or in any suitable manner; also, there can be a more or less number of them; also, the top and the bottom of the mold can be connected together in other ways than by the rods herein described, as in lieu thereof a tube or cylinder can be used, such as shown in cross-scction in Fig. 7, wherein S is the cylinder or tube of metal and B the iire-resisting material, and to tie the two parts of the reresistingmaterial together openings can be made inthe tube at intervals and as many as desired, through which the re-resisting material can pass and unite, the tube or cylinder S being connected to the castiron tube C and the ring F in any suitable manner, or in such ease the ring l" could be dispensed with, or in lieu of making the top, bottom ring, and rods separate pieces they can all be made integral by casting them all together in onepiece of any suitable metal.

As is obvious, the rods F, in lieu of being solid, can be made of small tubes and can also be of any shape in cross-section.

Having thus described my invention, what I claim isl. A mold consisting of a fire-resisting material having a metal top and a metal bottom secured together by a metal connection or connections embedded in the lire-resisting material.

2. A mold consistingol a tire-resisting niaterial having a metal top and a metal ring at the bottom secured together by rods embedded in the ire-resisting material, for the purpose specified.

3. A mold consisting of a lirercsisting material having a metal top and a metal ringat the bottom secured together by rods screwing into the metal top and bottom and embedded in the fire-resisting material, substantially as and for the purpose specified.

1t. A mold consisting of a tire-resisting material having a tubular top and a metal ring at the bottom secured together by rods em bedded in the lire-resisting material, for the purpose speeitied.

In testimony whereof I have hereunto set my hand in the presence ot two subscribing witnesses.

J OID,- L. l. SPOONER.

Vfitnesses:

EDWIN W. BROWN, CARRIE E. Nicn'oLs. 

